package practice;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class MT1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int changeTime = scanner.nextInt();
        String cur = scanner.nextLine();


       int start =0;
        int end = cur.length()-1;
        char []c = cur.toCharArray();
        int count=0;
        for (int i = 1; i <c.length ; i++) {
            if(c[i]!=c[i-1])
            continue;
            else
                for (int j = i; j < c.length; j++) {
                    if(c[i]!=c[j])
                    {


                    }
                }
        }

    }
}
